<button class="mb-3 mr-3" id="button-size-large" tiButton size="large">大号按钮</button>
<button class="mb-3 mr-3" id="button-size-default" tiButton>中号按钮</button>
<button class="mb-3 mr-3" id="button-size-small" tiButton size="small">小号按钮</button>
<button class="mb-3 mr-3" id="button-size-xs" tiButton size="xs">超小号按钮</button>
